ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,442,486, issued on Oct. 14, was assigned to Guangdong Sirui Optical Co. Ltd. (Zhongshan, China).
"Extendable support leg" was invented by Jie Li (Zhongshan, China) and Fan Xiao (Zhongshan, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "Aspects of the invention disclose a telescopic support leg, which includes a top leg tube, a middle leg tube and an bottom leg tube that are arranged sequentially from outside to inside. A first locking member includes a movable tube and a limiting plate, with a middle inner brace and an outer brace. A second locking member includes an inner tube and an elastic sleeve. The middle leg tube is secured to the inner sup...